(fix): pin maturin version and always run CI #63

Job	Run time
build sdist	26s
build on linux (x86_64 - 2_28)	3m 34s
build on linux (aarch64 - 2_28)	3m 21s
build on macos (x86_64)	2m 46s
build on macos (aarch64)	2m 30s
build on windows (x86_64)	1m 38s
build on windows (aarch64)	1m 9s
build on linux (armv7 - 2_28)	3m 31s
build on linux (ppc64le - 2_28)	3m 25s
build on linux (x86_64 - musllinux_1_2)	3m 12s
build on linux (aarch64 - musllinux_1_2)	3m 13s
build on linux (armv7 - musllinux_1_2)	3m 11s
build on windows (i686)	1m 18s
inspect	0s
version	0s
publish	0s
	33m 14s

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